//Method is used to accept incoming connection
public void AcceptCallback(IAsyncResult result)
{
Connection connection = new Connection();
lock (locker) // establish only one connection at time
{
try
{
//we try to make a connection
connection = new Connection();
connection.tcpClient = TCPListener.EndAcceptTcpClient(result); // Ending accepting the connection
// Adding client to connections that are already established
Connections.Add(connection);
//Handshake based on WebSocket protocol
confirmConnectionByHandshake(connection);
}
catch (ObjectDisposedException e)
{
Console.WriteLine(e.ToString()); // if anything went wrong
}
}
try
{
//print that client has connected
Console.WriteLine("Client connected: " +
((IPEndPoint)connection.tcpClient.Client.RemoteEndPoint).Address +
":" + ((IPEndPoint)connection.tcpClient.Client.RemoteEndPoint).Port);
}
catch (Exception)
{
///...
}
try
{
// start of the async data reading that are being send via TCP protocol
connection.tcpClient.GetStream().BeginRead(connection.buffer, 0, connection.buffer.Length,
new AsyncCallback(ReadCallBack), connection);
}
catch (Exception)
{
try
{
// If connection is lost print information
Console.WriteLine("Connection lost: " + ((IPEndPoint)connection.tcpClient.
Client.RemoteEndPoint).Address + ":" +
((IPEndPoint)connection.tcpClient.Client.RemoteEndPoint).Port);
//Delete information about the connection
disconnect(((IPEndPoint)connection.tcpClient.Client.RemoteEndPoint));
}
catch (Exception)
{
///...
}
}
// Start async method that waits for accepting another connection
TCPListener.BeginAcceptTcpClient(new AsyncCallback(AcceptCallback), null);
}
private static void TCPBeginAcceptClient()
{
TCPListener.BeginAcceptTcpClient(new AsyncCallback(TCPConnectAsyncCallback), null);
}